|Rank|Heat|Country|Cyclists|Result|Notes|
|---|---|---|---|---|---|
|1|6|Great Britain|Chris Hoy Jason Kenny Jamie Staff|42.950|Q, WR|
|2|7|France|Grégory Baugé Kévin Sireau Arnaud Tournant|43.541|Q|
|3|6|Germany|René Enders Maximilian Levy Stefan Nimke|44.197|Q|
|4|7|Netherlands|Theo Bos Teun Mulder Tim Veldt|44.213|Q|
|5|5|Australia|Daniel Ellis Mark French Shane Kelly|44.335|Q|
|6|1|Japan|Kiyofumi Nagai Tomohiro Nagatsuka Kazunari Watanabe|44.454|Q|
|7|3|Malaysia|Azizulhasni Awang Josiah Ng Mohd Rizal Tisin|44.752|Q|
|8|2|United States|Michael Blatchford Adam Duvendeck Giddeon Massie|45.346|Q|
|9|4|China|Feng Yong Li Wenhao Zhang Lei|45.556||
|10|3|Greece|Athanasios Mantzouranis Vasileios Reppas Panagiotis Voukelatos|45.645||
|11|2|Czech Republic|Tomáš Bábek Adam Ptáčník Denis Špička|45.678||
|12|5|Russia|Sergey Polynskiy Denis Dmitriev Sergey Kucherov|45.964||
|13|1|Poland|Maciej Bielecki Kamil Kuczyński Łukasz Kwiatkowski|45.266||

Question: name the number of teams in the 6th heat.
Answer: 2